1) Stir the cup of soil and water again. What happens to the soil when the water begins to move?
It starts to sink
.


2) What happens to the soil when the water slows down?
It floats back up
.


3) Which soil component drops to the bottom of the cup first?
The rocks.


Why do you think that happens?
Because the rocks are the heviest.

4) Which soil floats on the water?
the humis.

Why do you think this happens?

Vocabulary

Clay - litte tiny particles that are very hard. The clay is also under our grass.

Humus - Soft brown stuff that help grow plants. it is also under our grass